package dotdashdot.bradz.trendsettr;

import android.content.Context;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;

public class ClassGestureListener implements OnTouchListener {

    private final GestureDetector gestureDetector;

    public ClassGestureListener (Context ctx){
        gestureDetector = new GestureDetector(ctx, new GestureListener());
    }
    
    public GestureDetector getGestureDetector(){
        return  gestureDetector;
    }

    private final class GestureListener extends SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;
        
        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            boolean result = false;
            try {
                float diffY = e2.getY() - e1.getY();
                float diffX = e2.getX() - e1.getX();
                if (Math.abs(diffX) > Math.abs(diffY)) {
                    if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                        if (diffX > 0) {
                            onSwipeRight();
                        } else {
                            onSwipeLeft();
                        }
                    }
                } else {
                    if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                        if (diffY > 0) {
                            onSwipeBottom();
                        } else {
                            onSwipeTop();
                        }
                    }
                }
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            return result;
        }
    }

    public void onSwipeRight() {
    }

    public void onSwipeLeft() {
    }

    public void onSwipeTop() {
    }

    public void onSwipeBottom() {
    }
    
    public void onMove(float x_offset){
    }
    
    public void onDown(float x_offset){
    }
    
    public void notMoving(){
    }

	@Override
	public boolean onTouch(View v, MotionEvent event) {
		Log.i("GestureListener","Event: " + event.getAction());
		switch(event.getAction()) {
		  case MotionEvent.ACTION_DOWN :
			  onDown(event.getX());
			  return true;
	      case MotionEvent.ACTION_MOVE :
	    	  onMove(event.getX());
	          return true;
	      case MotionEvent.ACTION_UP :
	    	  notMoving();
	          return true;
	       default :
	    	  return true;
	    }
	}
}